Commit graph

11 commits

Author SHA1 Message Date
Jon Siwek
cbbe7b52dc Review/fix/change file reassembly functionality.
- Re-arrange how some fa_file fields (e.g. source, connection info, mime
  type) get updated/set for consistency.

- Add more robust mechanisms for flushing the reassembly buffer.
  The goal being to report all gaps and deliveries to file analyzers
  regardless of the state of the reassembly buffer at the time it has to
  be flushed.
2014-12-16 14:05:15 -06:00
Jon Siwek
69b1ba653d Minor adjustments to plugin code/docs.
Mostly whitespace/typos.
Moved some Plugin methods out from public access.
2014-07-30 16:48:23 -05:00
Robin Sommer
d34f23c8d4 A set of file analysis extensions.
- Enable manager to associate analyzers with a MIME type. With that,
  one can now say enable all analyzers for, e.g., "image/gif". This is
  exposed to script-land as

    Files::add_analyzers_for_mime_type(f: fa_file, mtype: string)

  For MIME types identified via libmagic, this happens automatically
  (via the file_new() handler in files/main.bro).

- Extend the analyzer API to better match that of protocol analyzers:

    - Adding unique analyzer IDs so that we can refer to instances
      from script-land.

    - Adding subtypes to Components so that a single analyzer
      implementation can support different types of analyzers
      internally.

    - Add an analyzer method SetTag() that allows to set the tag after
      construction.

    - Adding Init() and Done() methods for consistency with what other
      classes offer.

- Add debug logging to the file_analysis stream.

TODO: test cases missing for the new script-land functionality.
2013-11-26 11:20:14 -08:00
Jon Siwek
5fa9c5865b Factor out the need for a tag field in Files::AnalyzerArgs record.
This cleans up internals of how analyzer instances get identified by the
tag plus any args given to it and doesn't change script code a user
would write.
2013-07-31 09:48:19 -05:00
Seth Hall
58d133e764 Merge remote-tracking branch 'origin/master' into topic/seth/faf-updates
Conflicts:
	scripts/base/frameworks/files/main.bro
	scripts/base/init-bare.bro
	scripts/base/protocols/ftp/file-analysis.bro
	scripts/base/protocols/http/file-analysis.bro
	scripts/base/protocols/irc/file-analysis.bro
	scripts/base/protocols/smtp/file-analysis.bro
	src/const.bif
	src/event.bif
	src/file_analysis/Analyzer.h
	src/file_analysis/file_analysis.bif
2013-07-05 02:13:27 -04:00
Seth Hall
df2841458d Large overhaul in name and appearance for file analysis. 2013-07-05 02:00:14 -04:00
Robin Sommer
d8b05af7e5 Merge remote-tracking branch 'origin/topic/jsiwek/faf-cleanup'
Closes #1002.

* origin/topic/jsiwek/faf-cleanup:
  Move file analyzers to new plugin infrastructure.
  Add a general file analysis overview/how-to document.
  Improve file analysis doxygen comments.
  Improve tracking of HTTP file extraction (addresses #988).
  Fix HTTP multipart body file analysis.
  Remove logging of analyzers field of FileAnalysis::Info.
  Remove extraction counter in default file extraction scripts.
  Remove FileAnalysis::postpone_timeout.
  Make default get_file_handle handlers &priority=5.
  Add input interface to forward data for file analysis.
  File analysis framework interface simplifications.
2013-07-03 16:27:16 -07:00
Jon Siwek
7c7b6214a6 Move file analyzers to new plugin infrastructure. 2013-06-10 15:50:18 -05:00
Jon Siwek
f82167d067 Improve file analysis doxygen comments. 2013-05-23 10:22:49 -05:00
Robin Sommer
7610aa31b6 Various smalle tweaks in preparation for merging. 2013-05-13 16:47:00 -07:00
Jon Siwek
b8c98b8bf7 FileAnalysis: change terminology s/action/analyzer 2013-04-11 14:53:54 -05:00